At the end of the day if there’s no money in the council coffers to purchase the house or to carry out repairs, the council can always say “no thanks, sell it yourself and we’ll just have back the percentage discount from the sale that you received when we sold it to you’.If compulsory where does the council get the money from? What valuation? House prices increase even if just due to general inflation.
If repairs needed where does that money come from?
As soon as a council ceases to be one it no longer contributes to running the others.
Valuation? That will be on the same basis as when any land or property are compulsory purchased by the council. Two similar houses next to each other will be valued differently if they are in different conditions.